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<p>Dear all,</p>
<p>The luminosity scan DC setting were at 8,9,9 DC thresholds are <span
style="caret-color: rgb(49, 49, 49); color: rgb(49, 49, 49);
font-family: "Trebuchet MS", "Helvetica
Neue", Arial, Helvetica, sans-serif; font-size: 14px;
font-style: normal; font-variant-caps: normal; font-weight:
normal; letter-spacing: normal; orphans: auto; text-align:
start; text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); text-decoration: none;
display: inline !important; float: none;">R1 30mV, R2 45mV, R3
45 mV. These are the same setting as the spring run (Mac can
also confirm this)<br>
</span></p>
<p><span style="caret-color: rgb(49, 49, 49); color: rgb(49, 49,
49); font-family: "Trebuchet MS", "Helvetica
Neue", Arial, Helvetica, sans-serif; font-size: 14px;
font-style: normal; font-variant-caps: normal; font-weight:
normal; letter-spacing: normal; orphans: auto; text-align:
start; text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); text-decoration: none;
display: inline !important; float: none;">During the fall run we
took one run 4875 @45nA at DC 9,10,19 with the same thresholds
since we observed higher efficiency for this setting when we did
DC HV scan.</span></p>
<p><span style="caret-color: rgb(49, 49, 49); color: rgb(49, 49,
49); font-family: "Trebuchet MS", "Helvetica
Neue", Arial, Helvetica, sans-serif; font-size: 14px;
font-style: normal; font-variant-caps: normal; font-weight:
normal; letter-spacing: normal; orphans: auto; text-align:
start; text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); text-decoration: none;
display: inline !important; float: none;">It would be good that
we compare the tracking efficiency of these 2 DC settings <br>
</span></p>
<p><span style="caret-color: rgb(49, 49, 49); color: rgb(49, 49,
49); font-family: "Trebuchet MS", "Helvetica
Neue", Arial, Helvetica, sans-serif; font-size: 14px;
font-style: normal; font-variant-caps: normal; font-weight:
normal; letter-spacing: normal; orphans: auto; text-align:
start; text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); text-decoration: none;
display: inline !important; float: none;">Best regards,</span></p>
<p><span style="caret-color: rgb(49, 49, 49); color: rgb(49, 49,
49); font-family: "Trebuchet MS", "Helvetica
Neue", Arial, Helvetica, sans-serif; font-size: 14px;
font-style: normal; font-variant-caps: normal; font-weight:
normal; letter-spacing: normal; orphans: auto; text-align:
start; text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); text-decoration: none;
display: inline !important; float: none;">Latifa<br>
</span></p>
<p><span style="caret-color: rgb(49, 49, 49); color: rgb(49, 49,
49); font-family: "Trebuchet MS", "Helvetica
Neue", Arial, Helvetica, sans-serif; font-size: 14px;
font-style: normal; font-variant-caps: normal; font-weight:
normal; letter-spacing: normal; orphans: auto; text-align:
start; text-indent: 0px; text-transform: none; white-space:
normal; widows: auto; word-spacing: 0px;
-webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;
background-color: rgb(255, 255, 255); text-decoration: none;
display: inline !important; float: none;"><br>
</span></p>
<br>
<div class="moz-cite-prefix">On 10/8/18 2:34 PM, Francois-Xavier
Girod wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAOKxh47+v9m-yuvSqo=GEYyuXbe531vVyVJ3sJXRBKG6xmetLQ@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<div dir="ltr">Dear Stepan
<div><br>
</div>
<div>I cannot answer (a) but I can answer (b). The release used
for this study is not the same as the one used for DNP data
processing. The release used for DNP data processing is 5.6.2,
while the release used for this recent study (as well as the
processing of all the fall data) is 5c.6.8. In addition to
being significantly faster per event, I believe that 5c.6.8
has a better tracking efficiency than 5.6.2 and I also think
that the efficiency shown in my recent plot is a bit higher
than what we have in the DNP release.</div>
<div><br>
</div>
<div>Please let me know if you want to re-process the luminosity
scan data with 5.6.2. I can also work on a more detailed study
of the efficiency from the recent luminosity scan</div>
<div><br>
</div>
<div>Best regards</div>
<div>FX</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr">On Mon, Oct 8, 2018 at 1:26 PM Stepan Stepanyan
<<a href="mailto:stepanya@jlab.org" moz-do-not-send="true">stepanya@jlab.org</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word">FX,
<div><br>
</div>
<div>Will be good to know if (a) DC HV and thresholds of
these luminosity scan runs were the same as for the spring
luminosity scan runs, and (b) which software release was
used to process the data (last studies of the spring
luminosity scan were done with the version of the code
that was used for DNP data processing).</div>
<div><br>
</div>
<div>Stepan</div>
<div> <br>
<div>
<blockquote type="cite">
<div>On Oct 7, 2018, at 6:41 PM, Francois-Xavier Girod
<<a href="mailto:fxgirod@jlab.org"
target="_blank" moz-do-not-send="true">fxgirod@jlab.org</a>>
wrote:</div>
<br
class="m_2140171898955073278Apple-interchange-newline">
<div>
<div dir="ltr">
<div dir="ltr">Dear all
<div><br>
</div>
<div>I looked at the ratio of events with
positive time based tracks normalized at 2 nA
vs beam current from the luminosity scan, and
posted the corresponding plot, with separated
sectors, here</div>
<div><a
href="https://logbooks.jlab.org/entry/3605590"
target="_blank" moz-do-not-send="true">https://logbooks.jlab.org/entry/3605590</a><br>
</div>
<div><br>
</div>
<div>At 45 nA I found a ratio of about 75% +/-
5% depending on the sector number</div>
<div><br>
</div>
<div>Best regards</div>
<div>FX</div>
<div><br>
</div>
<div>Best regards</div>
<div>FX</div>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr">On Sun, Oct 7, 2018 at 8:34 PM
Rafayel Paremuzyan <<a
href="mailto:rafopar@jlab.org" target="_blank"
moz-do-not-send="true">rafopar@jlab.org</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0
0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">Dear all,<br>
<br>
We didn't get much beam since yesterday,<br>
MCC is still working on resolving Accelerator
related issues( RF <br>
separator, RF zone 1L03).<br>
I think there is no much to discuss for today.<br>
Instead will be good if we work on the analysis
of the special runs <br>
(random, packed data, Lumi scans),<br>
and in tomorrow's RC meeting discuss what
decisions we should make in <br>
terms of trigger/bit packing and the beam
current.<br>
<br>
Rafo<br>
<br>
<br>
On 10/06/2018 09:42 AM, Rafayel Paremuzyan
wrote:<br>
> Dear all,<br>
><br>
> We took data up to 2:am this night and
after that south linac had <br>
> vacuum problems,<br>
> which was solved half hour ago.<br>
> We expect to get the beam soon, and the
plan is to continue data <br>
> taking through this weekend.<br>
><br>
> There is no important items to discuss
today.<br>
> I will update you with the run status
tomorrow by e-mail.<br>
><br>
> Rafo<br>
<br>
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